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RSI Team, Senior experts
The following posts are in no particular order. They are purposely randomized.
John Lark
John Lark is a globally recognized expert in risk management, with a distinguished career spanning leadership roles in research, committee chairing, and board-level facilitation. He collaborates with international bodies, including the OECD, US EPA, and ISO. Mr. Lark's expertise extends to speaking engagements at prominent conferences worldwide. He holds the CPRM certification and actively contributes to ISO committees. His extensive board experience includes chairing two not-for-profit boards and participating in major charities. He earned the ICD.D designation through the Director's Education Program. Mr. Lark authored the international ISO Guide for implementing ISO 31000:2009.
Read More Emma Hartnett
Emma Hartnett is an internationally recognized expert in risk assessment, specializing in toxicological, microbiological, and nutritional hazards. She holds a B.Sc. in Microbiology and a Ph.D. in Statistics and Modelling Science, where her thesis work focused on quantitative risk assessment for campylobacter infection from chicken. Hartnett has developed a variety of decision support tools addressing issues from infectious diseases to bioterrorism preparedness. She frequently contributes to WHO and FAO initiatives, and has been selected for the Joint FAO/WHO Expert Meetings on Microbiological Risk Assessment Roster of Experts for 2018-2022.
Read More Syed A. Sattar
Dr. Sattar, with nearly five decades of research experience, specializes in microbial pathogens, their environmental influence, and safe technologies for combating infectious agents. His research delves into how pathogens survive and spread via water, food, air, waste, and surfaces. Funding for his work comes from peer-reviewed sources and research contracts. He offers expertise to national and international agencies and the private sector. With an extensive publication record and over 350 invited lectures worldwide, Dr. Sattar's contributions to the field are substantial. Notable works include the 2013 reference text "Principles and Practice of Disinfection, Preservation & Sterilization" (5th ed; Wiley-Interscience). He's received several professional honors, including the M.S. Favero Lectureship, Lifetime Achievement Award, and the Hygieia Gold Medal.
Read More William Leiss
Dr. William Leiss held the NSERC/SSHRC Research Chair in Risk Communication and Public Policy at the Haskayne School of Business, University of Calgary, from 1999 to 2005. He has a substantial consulting background, collaborating with industry and various Canadian government departments on risk communication, risk management, public consultation, and multi-stakeholder consensus-building processes. Dr. Leiss has provided expertise on diverse issues, including pesticides, toxic chemicals, tobacco, prescription drugs, electric & magnetic fields, and genetic engineering. He earned his PhD from the University of California at San Diego.
Read More Paul Price
With 45 years of experience in exposure and risk assessment, Dr. Paul Price has worked with diverse organizations, including the U.S. EPA and Dow Chemical. Specializing in mixture risk assessments, he is an adjunct professor at the University of Iowa and serves on the European Food Safety Authority’s committee on combined exposures. A prolific author, Dr. Price is currently focused on publications concerning mixture risk assessment and the Mixture Adjustment Factor.
Read More Natalia (Natasha) Shilnikova
Natalia Shilnikova earned her medical degree and a PhD in Medical Sciences, focusing on epidemiology related to nuclear facilities. She moved to Canada in 2007, joining the University of Ottawa McLaughlin Centre for Population Health Risk Assessment. Since joining Risk Sciences International in 2011, Dr. Shilnikova has worked on projects involving toxicology, epidemiology, and human health risk assessment, including systematic reviews and toxicity profiles for various chemicals and drugs. She has also contributed to post-approval surveillance of novel cancer drugs.
Read More Greg Paoli
Greg Paoli earned both his Bachelor's and Master's degrees from the University of Waterloo, specializing in engineering and systems design. His early career involved diverse research projects at the University of Waterloo's Institute for Risk Research. Greg later founded Decisionalysis Risk Consultants in 1997 and co-founded Risk Sciences International in 2006. He has served on multiple high-profile committees, including those under the U.S. National Academy of Sciences. As CEO of Risk Sciences International, Greg focuses on risk-based regulatory transformations and has developed enabling technologies like FDA-iRISK. His work spans various sectors, from food and chemical safety to public health, and he continues to contribute to the advancement of risk-based decision-making methodologies.
Read More C. Calvin Willhite
Dr. Calvin Willhite is a renowned expert in developmental toxicology and quantitative structure-activity relationships, with a substantial publication record. He has played key roles in influential organizations and committees, including the National Academy's Committee on Toxicology, the U.S. EPA's National Advisory Committee, and the IARC Cancer Chemoprevention Panel. Dr. Willhite is a member of the Society of Toxicology and is featured in notable biographical publications. Currently, he serves as an Associate Expert with Risk Sciences International, contributing to health risk assessments for various chemicals, both man-made and naturally-occurring.
Read More Daniel Krewski
Daniel Krewski began his career in the federal government of Canada, focusing on programs within Health Canada, particularly in food safety and environmental health. Trained in mathematics, statistics, and biostatistics, his multidisciplinary background reflects the complex nature of risk science. He later transitioned to academia, founding the McLaughlin Centre for Population Health Risk Assessment at the University of Ottawa. There, he developed new methodologies and collaborated internationally. In 2006, he co-founded Risk Sciences International, aiming to provide expert advice on diverse risk issues. His contributions have been instrumental in shaping risk assessment frameworks used by organizations like Health Canada and the U.S. Environmental Protection Agency. In 2023, Dr. Krewski passed the CEO's baton to Greg Paoli; he remains active as RSI Chief Risk Scientist.
Read More Rosanna Wong
Rosanna Wong holds a B.Sc. in Environmental Science from the University of Waterloo, with diverse co-op experiences ranging from aquaculture research in the Netherlands to botany collections in Canada. She transitioned into risk analysis, initially as a Junior Analyst at Risk Sciences International, focusing on food safety and public health. Currently, she conducts research on food safety, transportation, and climate change, and leads the development of a climate resilience tool that integrates both qualitative and quantitative data.
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